Clementine-audio-player-Mac.../src/m3uparser.cpp

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/* This file is part of Clementine.
Clementine is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Clementine is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with Clementine. If not, see <http://www.gnu.org/licenses/>.
*/
#include "m3uparser.h"
#include <QtDebug>
M3UParser::M3UParser(QIODevice* device, const QDir& directory, QObject* parent)
: QObject(parent),
device_(device),
type_(STANDARD),
directory_(directory) {
}
const QList<Song>& M3UParser::Parse() {
QString line = QString::fromLatin1(device_->readLine()).trimmed();
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if (line.startsWith("#EXTM3U")) {
// This is in extended M3U format.
type_ = EXTENDED;
line = QString::fromLatin1(device_->readLine()).trimmed();
}
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forever {
if (line.startsWith('#')) {
// Extended info or comment.
if (type_ == EXTENDED && line.startsWith("#EXT")) {
if (!ParseMetadata(line, &current_metadata_)) {
qWarning() << "Failed to parse metadata: " << line;
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continue;
}
}
} else {
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Song song;
song.Init(current_metadata_.title,
current_metadata_.artist,
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QString(), // Unknown album.
current_metadata_.length);
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// Track location.
QString location;
if (!ParseTrackLocation(line, &song)) {
qWarning() << "Failed to parse location: " << line;
} else {
songs_ << song;
current_metadata_.artist.clear();
current_metadata_.title.clear();
current_metadata_.length = -1;
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}
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}
if (device_->atEnd()) {
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break;
}
line = QString::fromLatin1(device_->readLine()).trimmed();
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}
return songs_;
}
bool M3UParser::ParseMetadata(const QString& line, M3UParser::Metadata* metadata) const {
// Extended info, eg.
// #EXTINF:123,Sample Artist - Sample title
QString info = line.section(':', 1);
QString l = info.section(',', 0, 0);
bool ok = false;
int length = l.toInt(&ok);
if (!ok) {
return false;
}
QString track_info = info.section(',', 1);
QStringList list = track_info.split('-');
if (list.size() <= 1) {
return false;
}
metadata->artist = list[0].trimmed();
metadata->title = list[1].trimmed();
metadata->length = length;
return true;
}
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bool M3UParser::ParseTrackLocation(const QString& line, Song* song) const {
if (line.contains(QRegExp("^[a-z]+://"))) {
// Looks like a url.
QUrl temp(line);
if (temp.isValid()) {
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song->set_filename(temp.toString());
return true;
} else {
return false;
}
}
// Should be a local path.
if (QDir::isAbsolutePath(line)) {
// Absolute path.
// Fix windows \, eg. C:\foo -> C:/foo.
QString proper_path = QDir::fromNativeSeparators(line);
if (!QFile::exists(proper_path)) {
return false;
}
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song->set_filename(proper_path);
} else {
// Relative path.
QString proper_path = QDir::fromNativeSeparators(line);
QString absolute_path = directory_.absoluteFilePath(proper_path);
if (!QFile::exists(absolute_path)) {
return false;
}
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song->set_filename(absolute_path);
}
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song->InitFromFile(song->filename(), -1);
return true;
}